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. There are countless examples in biology of how the shape (or structure) of a p

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Question

. There are countless examples in biology of how the shape (or structure) of a particular object relates to its job (or function). The relationship between form and function means that anatomical structures within organisms often have shapes or other physical characteristics that are specifically adapted to the functions they perform.

• Choose three different structures we have discussed this semester and describe specifically how the form or shape of these structures is well suited to their function.

The structures may be molecules, compounds, organelles, cells, or organs but each of the three structures must be different. • Include a detailed description of each structure you choose and explain how its form fits its function. Your answer must be written in full sentences in several well-developed paragraphs to receive full credit.

Explanation / Answer

Structure of DNA- DNA molecules are long to store more information. The double helix gives stability to the molecule. Hydrogen bonds allows easy unzipping for reading and copying information. The base pairing means that complementary strands of information can be replicated. The sequence of bases acts as information storage in the form of codes for building proteins.

Structure of RBC- RBC contains hemoglobin which transports oxygen from the lungs to all parts of the body. Since RBC has no nucleus it carries more hemoglobin which leads to increased transport of oxygen. RBC has a circular biconcave shape which provides increased surface area to volume ratio of the cell. Hence, increased transport of oxygen.

Structure of plasma membrane- plasma membrane isolates the cells contents from the external environment. It regulates exchange of essential nutrients. It allows communication between cells. It regulates biochemical reactions of the cell.

In this way we are able to relate that the distinct structure of the substance influences the roles and the functions it performs.